基于SST和Chl-a的西南大西洋阿根廷滑柔鱼渔场时空变动分析  

Temporal and Spatial Variation of Illex argentinus Fishing Ground in the Southwest Atlantic Ocean Based on SST and Chl-a

作　　者：崔国辰 玄文丹 魏裙倚 陶迎新 苏施 余谦超 朱文斌[1] CUI Guo-chen;XUAN Wen-dan;WEI Qun-yi(Zhejiang Marine Fisheries Reseanch Institute,Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture and Rural Affairs,Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource ofZhejiang Province,Zhoushan 316021;Haian Aquatic Product Technology Promotion Department,Haian 226600;Marine and Fishery Institute of Zhejiang Ocean University,Zhoushan 316021,China)

机构地区：[1]浙江省海洋水产研究所,农业农村部重点渔场渔业资源科学观测试验站,浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021 [2]海安市水产技术推广站,江苏海安226600 [3]浙江海洋大学海洋与渔业研究所,浙江舟山316021 [4]舟山宁泰远洋渔业有限公司,浙江舟山316100

出　　处：《浙江海洋大学学报（自然科学版）》2023年第1期10-19,共10页Journal of Zhejiang Ocean University：Natural Science

基　　金：国家重点研发计划“蓝色粮仓科技创新”重点专项(2019YFD0901505);浙江省重点研发计划(2018C02026)。

摘　　要：阿根廷滑柔鱼是西南大西洋的重要捕捞品种,其资源年间波动剧烈。本文基于2014、2016、2017、2018年度西南大西洋渔捞日志数据,结合海表温度(sea surface temperature,SST)及叶绿素a(chlorophyll-a,Chl-a)浓度数据,运用渔场重心分析、地统计插值、GAM模型分析等方法探究西南大西洋公海阿根廷滑柔鱼不同年度、月份渔场变动及其与海洋环境因子的关系。结果表明,2014年度阿根廷滑柔鱼渔场分布于42°S~47°S、58°W~61°W公海海域,各月产量重心经纬度分布范围广;2016—2018年度分布于45°S~47°S、59°W~61°W海域,各月产量重心较为集中;渔场的最适SST范围是12~14°C,最适Chl-a浓度范围是0.1~2.0 mg·m-3。研究认为该海域渔获主要为夏季产卵群体和南部巴塔哥尼亚群体,渔场变化的影响机制复杂,年度、月份是CPUE主要影响因子。Illex argentinus is an essential commercial species in the Southwest Atlantic Ocean.Its resources fluctuate substantially across the years.To study the temporal variation of I.argentinus and its relationship with relevant marine environmental factors in different years and months,we conducted fishing ground analyses,geostatistical interpolation,and generalized additive model(GAM)analyses using sea surface temperature(SST),chlorophyll-a(Chl-a)concentration,and logbook data in 2014,2016,2017 and 2018.The results showed that squid fishing ground was distributed at 42°S-47°S and 58°W-61°W on the high sea,with a wide distribution of the center of gravity for each month of production in 2014;the squid fishing ground distributed at 45°S-47°S and 59°W-61°W on the high sea from 2016-2018,with a more concentrated production center of gravity in each month;I.argentinus preferred SST between 12-14℃,and Chl-a concentration from 0.1 to 2.0 mg·m-3.The study found that the catch in the Southwest Atlantic Ocean mainly accounted for the summer spawning population and the southern Patagonian population.The mechanism affecting the variation in the fishing ground was complicated,and the year and month had significant impact on the CPUE of I.argentinus fishery.

关 键 词：西南大西洋 阿根廷滑柔鱼 时空分布 环境因子 GAM模型 

分 类 号：S931.4[农业科学—渔业资源]